Transcript
A P PEN D I X
B
Connectors and Cables This appendix provides connector and cable descriptions for the following switch ports:
• • • • •
Switched 10BaseT and 100BaseTX RJ-45 ports Switched 100BaseFX SC port Switched 100-Mbps fiber ports Switched 10-Mbps AUI port Console port
Switched 10BaseT and 100BaseTX RJ-45 Ports The 10BaseT ports (1x through 12x or 24x) and the 100BaseTX ports (Ax and Bx) use RJ-45 connectors (Figure B-1). Table B-1 describes the port pin assignments. Figure B-1
10BaseT RJ-45 Connector
H10581
12345678
Connectors and Cables B-1
Switched 10BaseT and 100BaseTX RJ-45 Ports
Table B-1
Pin
Label
1
RD+
2
RD-
3
TD+
4
NC
5
NC
6
TD-
7
NC
8
NC
10BaseT and 100BaseTX RJ-45 Port Pin Assignments
As indicated by the X, the 10BaseT and 100BaseTX ports have their transmit (TD) and receive (RD) signals internally crossed for attachment of an adapter using a straight-through cable. When connecting the 10BaseT ports to 10BaseT-compatible servers, routers, or workstations, use a straight-through cable wired for 10BaseT. When connecting to other switches or repeaters, use a crossover cable. When connecting the 100BaseTX ports to 100BaseT-compatible servers, routers, or workstations, use a straight-through cable. When connecting to the 100BaseTX port on another switch or hub, use a crossover cable. Note Always observe the following general rules when connecting devices: Use a
straight-through cable to connect two ports when one of the ports is designated with an X; use a crossover cable to connect two ports when both ports are designated with an X.
B-2
Catalyst 1900 Series Installation and Configuration Guide
Switched 100BaseFX Duplex SC Port
The schematics for the crossover and straight-through cables are shown in Figure B-2 and Figure B-3, respectively.
Hub
3 TD+ 6 TD–
3 TD+ 6 TD–
1 RD+ 2 RD–
1 RD+ 2 RD–
Figure B-3
H5579
Hub
Crossover Cable Schematic
Straight-Through Cable Schematic
Hub
Adapter
3 TD+ 6 TD–
3 RD+ 6 RD–
1 RD+ 2 RD–
1 TD+ 2 TD–
H5578
Figure B-2
Switched 100BaseFX Duplex SC Port The 100BaseFX port (Ax), as illustrated in Figure B-4, uses a duplex SC connector. SC Connector
H10759
Figure B-4
Connectors and Cables B-3
Switched 100-Mbps MT-RJ Fiber Ports
The fiber-optic connections between the switch and the attached device can be as follows:
•
If the switch port and the port on the attached device are configured for half-duplex operation, the connection can be over distances of up to 412 meters.
•
If the switch port and the port on the attached device are configured for full-duplex operation, the connection can be over distances of up to 2 kilometers.
Switched 100-Mbps MT-RJ Fiber Ports The 100-Mbps fiber ports (A and B), as illustrated in Figure B-5, uses MT-RJ connectors, and you must use the appropriate MT-RJ fiber-optic patch cable to connect these ports to the SC or ST port(s) on the other 100BaseFX-compatible device(s). For information about fiber-optic cabling distances, see the “Switched 100BaseFX Duplex SC Port” section on page B-3. You can order MT-RJ patch cable from your cable vendor, or you can order these cables from Cisco:
• • • • • •
CAB-MTRJ-SC-MM-1M (1-meter, MT-RJ-to-SC multimode cable) CAB-MTRJ-SC-MM-3M (3-meter, MT-RJ-to-SC multimode cable) CAB-MTRJ-SC-MM-5M (5-meter, MT-RJ-to-SC multimode cable) CAB-MTRJ-ST-MM-1M (1-meter, MT-RJ-to-ST multimode cable) CAB-MTRJ-ST-MM-3M (3-meter, MT-RJ-to-ST multimode cable) CAB-MTRJ-ST-MM-5M (5-meter, MT-RJ-to-ST multimode cable)
The fiber-optic wavelength of the ports is 1300 nanometers. MT-RJ Connectors
28845
Figure B-5
B-4
Catalyst 1900 Series Installation and Configuration Guide
Switched 10-Mbps AUI Port
Switched 10-Mbps AUI Port The Ethernet AUI port uses a 15-pin female connector, as shown in Figure B-6. The pin assignments for this port are described in Table B-2.
8
AUI Port
7
15
Table B-2
6
14
5
13
4
12
3
11
2
10
1
9
H5320
Figure B-6
AUI Port Pin Assignments
Pin
Label
Description
1
GND
Ground
2
CI+
Positive AUI differential collision-data input
3
TX+
Positive AUI differential transmit-data input
4
GND
Ground
5
RX+
Positive AUI differential receive-data output
6
GND
Ground
7
NC
—
8
GND
Ground
9
CI-
Negative AUI differential collision data
10
TX-
Negative AUI differential transmit-data input
11
GND
Ground
12
RX-
Negative AUI differential receive data output
13
+12V
12V supply for external MAU
14
GND
Ground
15
NC
—
Connectors and Cables B-5
Console Port
Console Port The console port uses an 8-pin RJ-45 connector, as shown in Figure B-1. The supplied RJ-45-to-RJ-45 rollover cable and adapters are used to connect the switch console port to a management station or modem. The following sections describe the rollover cable and adapters for the console port.
Identifying a Rollover Cable You can identify a rollover cable by comparing the two modular ends of the cable. Hold the cable ends side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug (see Figure B-7). Figure B-7
Identifying a Rollover Cable Pin 1 on one connector and pin 8 on the other connector should be the same color. Pin 8
H10632
Pin 1
B-6
Catalyst 1900 Series Installation and Configuration Guide
Connecting to a PC
Connecting to a PC Use the thin, flat, RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL) to connect the console port to a PC running terminal emulation software. Figure B-8 shows how to connect the console port to a PC. Table B-3 lists the pin assignments for the console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL). This adapter is supplied with the switch. Connecting the Console Port to a PC PC
RJ-45-to-RJ-45 rollover cable
Catalyst 1900
RJ-45-to-DB-9 adapter (labeled TERMINAL)
Table B-3
H10564
Figure B-8
Console Port Signaling and Cabling Using a DB-9 Adapter
Console Port (DTE)
RJ-45-to-RJ-45 Rollover Cable
RJ-45-to-DB-9 Terminal Adapter
Console Device
Signal
RJ-45 Pin
RJ-45 Pin
DB-9 Pin
Signal
RTS
11
8
8
CTS
DTR
2
7
6
DSR
TxD
3
6
2
RxD
GND
4
5
5
GND
GND
5
4
5
GND
RxD
6
3
3
TxD
DSR
7
2
4
DTR
1
7
RTS
CTS 1
1
8
Pin 1 is connected (inside the terminal adapter) to Pin 8.
Connectors and Cables B-7
Console Port
Connecting to a Terminal Table B-4 lists the pin assignments for the console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 female DTE adapter. Note This adapter is not supplied with the switch.
Table B-4
Console Port Signaling and Cabling Using a DB-25 Adapter
Console Port (DTE)
RJ-45-to-RJ-45 Rollover Cable
RJ-45-to-DB-25 Terminal Adapter
Console Device
Signal
RJ-45 Pin
RJ-45 Pin
DB-25 Pin
Signal
RTS
11
8
5
CTS
DTR
2
7
6
DSR
TxD
3
6
3
RxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
TxD
DSR
7
2
20
DTR
1
4
RTS
CTS
1
8
1 Pin 1 is connected (inside the terminal adapter) to Pin 8.
B-8
Catalyst 1900 Series Installation and Configuration Guide
Connecting to a Modem
Connecting to a Modem Table B-5 lists the pin assignments for the console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter. Note This adapter is not supplied with the switch.
Table B-5
Console Port Signaling and Cabling Using a DB-25 Adapter
Console Port (DTE)
RJ-45-to-RJ-45 Rollover Cable
RJ-45-to-DB-25 Modem Adapter
Modem
Signal
RJ-45 Pin
RJ-45 Pin
DB-25 Pin
Signal
RTS
11
8
4
RTS
DTR
2
7
20
DTR
TxD
3
6
3
TxD
GND
4
5
7
GND
GND
5
4
7
GND
RxD
6
3
2
RxD
DSR
7
2
8
DCD
1
5
CTS
CTS
1
8
1 Pin 1 is connected (inside the terminal adapter) to Pin 8.
Connectors and Cables B-9
Console Port
B-10
Catalyst 1900 Series Installation and Configuration Guide
